100% CPU usage and no login

[Geza Makay]

Hi everyone,

I do see 100% CPU usage, and I cannot login from a Windows NT 4.0
WorkStation. I did everything according to the documentation, and even
joining to the domain worked wonderfully. I did not create any "domain
group map" or "domain user map", if I do not want to manage users using NT,
then I do not need these (according to the documentation). If I try to
login with an incorrect user name or password, then I receive the message
that the user name or password is not correct within a second. But trying
to login with a correct username/password always stops the NT for 2-5
minutes, then I got the message that the machine account does not have the
correct password. Setting the log level to 99, I see the followings in the
log file (only an extract):

[1998/12/21 07:16:41, 4] rpc_server/srv_pipe.c:api_rpc_command(670)
  api_rpc_command: api_netlog_rpc op 0x4 - api_rpc_command: NET_REQCHAL
...
[1998/12/21 07:16:42, 4] rpc_server/srv_pipe.c:api_rpc_command(670)
  api_rpc_command: api_netlog_rpc op 0xf - api_rpc_command: NET_AUTH2
...
[1998/12/21 07:16:42, 4] rpc_server/srv_pipe.c:api_rpc_command(670)
  api_rpc_command: api_netlog_rpc op 0x2 - api_rpc_command: NET_SAMLOGON
...
[1998/12/21 07:16:42, 3] rpc_server/srv_netlog.c:api_net_sam_logon(653)
  SAM Logon (Interactive). Domain:[BOLYAI].  User:[makay]
...
[1998/12/21 07:16:42, 10] passdb/sampassdb.c:pwdb_sam_map_names(443)
  pwdb_sam_map_name: found unix user makay nt makay uid 202 rid 0x710
[1998/12/21 07:16:42, 10] groupdb/groupdb.c:iterate_getusergroupsnam(217)
  search for usergroups by name: makay

Although the RPC commands differ from those in the documentation (in
NTDOMAIN.txt it says they start with LSA_, and that I should also have an
LSA_NET_SRV_PWSET after LSA_AUTH2, which I do not have), this seems OK to
me sofar, everything happened within 1 second of the actual entering the
password at the login screen on the NT machine. Now the interesting part:
the following messages repeat until I kill the appropriate smbd process:

[1998/12/21 07:16:42, 10] lib/domain_namemap.c:lookupsmbgrpgid(1171)
  lookupsmbgrpgid: unix gid 0
[1998/12/21 07:16:42, 10] groupdb/groupunix.c:getgrpunixpwent(210)
  line: 'root::1001:'
[1998/12/21 07:16:42, 5] groupdb/groupdb.c:iterate_getusergroupsnam(239)
  group name root members: 0
[1998/12/21 07:16:42, 10] groupdb/groupunix.c:getgrpunixpwent(169)
  getgrpunixpwent: enum unix group entry root

Note that I do not get an LSA_SAM_LOGOFF (or NET_SAM_LOGOFF) anywhere in
the log file. Could someone, please, check what goes wrong?

Another note (which may be related to the above problem): I get several
warnings during compilation on our SCO OpenServer Enterprise System 5.0.2
with gcc version 2.7.2.1, most of them connected with the first argument of
the bzero function, like the following:

smbd/connection.c: In function `yield_connection':
smbd/connection.c:45: warning: passing arg 1 of `bzero' from incompatible
pointer type

another bunch of them connected with the second argument of the
make_unistr2 function, like the following:

rpc_parse/parse_lsa.c: In function `make_q_lookup_names':
rpc_parse/parse_lsa.c:689: warning: passing arg 2 of `make_unistr2'
discards `const' from pointer target type

but there are others:

lib/util.c: In function `get_unixgroups':
lib/util.c:2352: warning: comparison is always 0 due to limited range of
data type
lib/util.c:2352: warning: comparison is always 0 due to limited range of
data type
lib/util.c: In function `nametouid':
lib/util.c:2441: warning: passing arg 1 of `Get_Pwnam' discards `const'
from pointer target type

Thanks for any help.

With best regards,

Geza


*************************************************************************
*           Name: Geza Makay (Mr., Dr., Prof.)                          *
*      Institute: Jozsef Attila University of Szeged                    *
*           Mail: Bolyai Institute, Aradi vertanuk tere 1.              *
*                 H-6720, Szeged, Hungary                               *
*            Tel: (62) 454-091 (Hungary's code: 36)                     *
*    Fax/Message: (62) 426-246 (Hungary's code: 36)                     *
*         E-mail: makayg at math.u-szeged.hu                               *
* World Wide Web: http://www.math.u-szeged.hu/                          *
*************************************************************************
* "To err is human, but to really mess things up you need a computer."  *
*************************************************************************